Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Cascade control Rheostat control Pole changing Combination of cascade and pole changing Cascade control Rheostat control Pole changing Combination of cascade and pole changing ANSWER DOWNLOAD EXAMIANS APP
Electric Traction For 25 kV single phase system power supply frequency is 25 Hz 100 Hz 50 Hz 60 Hz 25 Hz 100 Hz 50 Hz 60 Hz ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Locomotive having mono-motor bogies Has better riding qualities due to the reduction of lateral forces Are suited both for passenger as well as freight service Has better coefficient of adhesion All of the listed here Has better riding qualities due to the reduction of lateral forces Are suited both for passenger as well as freight service Has better coefficient of adhesion All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The efficiency of diesel locomotives is nearly 60 to 70 percent 30 to 40 percent 20 to 25 percent 45 to 55 percent 60 to 70 percent 30 to 40 percent 20 to 25 percent 45 to 55 percent ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Automatic signaling is used for which of the following trains? Superfast trains All trains Mail and express trains Suburban and Urban electric trains Superfast trains All trains Mail and express trains Suburban and Urban electric trains ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The value of coefficient of adhesion will be high when rails are Cleaned with sand Sprayed with oil Wet Greased Cleaned with sand Sprayed with oil Wet Greased ANSWER DOWNLOAD EXAMIANS APP
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